Dispute with broadband provider

[eastsussexlady]

I’m in dispute with a broadband/TV/phone provider over potential cancellation charges.
Whilst negotiating during a phone conversation I agreed to a contract that would be less expensive than my current contract and this included an ‘entertainment’ element in the package with a monthly charge of £20.
Several days later I received a Contract Summery email from them stating “Entertainment charge £20 increasing to £80 after 3 months”. No way would I have accepted this contract had I been informed that the cost would quadruple after 3 months. No mention of this was made during the telephone conversation.
They are now threatening a charge of up to £886 if I now cancel!
Is the contract valid if I was given misleading advice?

Do a SAR’s request and ask them for the recording of the call

Does the contract refer to a 14 day cooling off period if you change your mind?

This would fall under the right to cancel within 14 days. They cannot charge a cancellation fee if you cancel within 14 days

https://www.citizensadvice.org.uk/consumer/phone-internet-downloads-or-tv/cancelling-a-phone-tv-internet-or-mobile-contract/#:~:text=If%20you%20signed%20up%20over,how%20your%20circumstances%20have%20changed.